package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.service.CategoryService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * 分类管理
 */
@RestController
@RequestMapping("/category")
public class CategoryController {

    @Autowired
    private CategoryService categoryService;

    /**
     * 新增分类
     *
     * @param category
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody Category category) {
        if (category.getType() != 1 & category.getType() != 2) {
            return R.error("您输入的分类(type)有误，添加失败");
        }
        //判断是否为中文
        String regEx = "[\\u4e00-\\u9fa5]+";
        Pattern p = Pattern.compile(regEx);
        Matcher matcher = p.matcher(category.getName());
        if (!matcher.find()) {
            return R.error("请输入中文");
        }

        //去除两端空格
        category.setName(category.getName().trim());

        categoryService.save(category);
        return R.success("新增分类成功");
    }

    /**
     * 分页查询
     *
     * @param page
     * @param pageSize
     * @return
     */
    @GetMapping("page")
    public R<Page> page(int page, int pageSize) {
        //分页构造器
        Page<Category> categoryPage = new Page<>(page, pageSize);
        //条件构造器
        LambdaQueryWrapper<Category> lqw = Wrappers.<Category>lambdaQuery();
        //排序条件
        lqw.orderByAsc(Category::getSort);
        //执行方法
        categoryService.page(categoryPage, lqw);
        return R.success(categoryPage);

    }

    /**
     * 删除分类
     *
     * @param id
     * @return
     */
    @DeleteMapping
    public R<String> delete(Long id) {
        categoryService.delete(id);
        return R.success("删除分类成功");
    }

    /**
     * 修改
     *
     * @param category
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Category category) {


        categoryService.updateById(category);
        return R.success("修改成功");
    }



    /**
     * 根据条件查询分类数据
     *
     * @return
     */
    @GetMapping("/list")
    public R<List<Category>> list(Category category) {
        LambdaQueryWrapper<Category> lqw = Wrappers.lambdaQuery();
        lqw.eq(category.getType() != null, Category::getType, category.getType());
        lqw.orderByAsc(Category::getCreateTime);
        List<Category> list = categoryService.list(lqw);

        return R.success(list);
    }
}
